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Finding the Fourth Proportional to 4,878.72, 6,733.19 and 2,889.97

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Solution

The fourth proportional to 4,878.72, 6,733.19 and 2,889.97 is: 3,988.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.72 : 6,733.19 = 2,889.97 : x
  2. Step 2: Convert to fraction form
    4,878.72/6,733.19 = 2,889.97/x
  3. Step 3: Cross multiply
    4,878.72x = 6,733.19 × 2,889.97
  4. Step 4: Simplify right side
    4,878.72x = 19,458,707.50
  5. Step 5: Solve for x
    x = 19,458,707.50/4,878.72
  6. Step 6: Final answer
    x = 3,988.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.